Graphite yog ib qho ntawm cov minerals mos tshaj plaws, ib qho allotrope ntawm cov elemental carbon, thiab ib qho crystalline minerals ntawm carbonaceous elements. Nws cov crystalline framework yog ib tug hexagonal layered structure; qhov deb ntawm txhua lub mesh txheej yog 340 tawv nqaij. m, qhov sib nrug ntawm cov carbon atoms hauv tib lub network txheej yog 142 picometers, koom nrog lub hexagonal crystal system, nrog rau tag nrho cov layered cleavage, qhov cleavage nto yog dominated los ntawm molecular bonds, thiab qhov attraction rau molecules yog tsis muaj zog, yog li nws lub ntuj floatability zoo heev; qhov periphery ntawm txhua lub carbon atom yog txuas nrog peb lwm cov carbon atoms los ntawm covalent bonding los ua ib lub covalent molecule; txij li thaum txhua lub carbon atom emits ib tug electron, cov electrons ntawd tuaj yeem txav mus los tau yooj yim, yog li graphite yog ib tug conductor, Kev siv graphite suav nrog kev tsim cov cwj mem leads thiab lubricants, ntawm lwm tus.
Cov khoom siv tshuaj lom neeg ntawm graphite ruaj khov heev, yog li graphite tuaj yeem siv ua tus cwj mem, xim, tus neeg sawv cev polishing, thiab lwm yam, thiab cov lus sau nrog graphite tuaj yeem khaws cia rau lub sijhawm ntev.
Graphite muaj cov yam ntxwv ntawm kev tiv taus kub siab, yog li nws tuaj yeem siv ua cov khoom siv refractory. Piv txwv li, cov crucibles siv hauv kev lag luam metallurgical yog ua los ntawm graphite.
Graphite siv tau ua cov khoom siv hluav taws xob. Piv txwv li, cov pas nrig carbon hauv kev lag luam hluav taws xob, cov electrodes zoo ntawm cov khoom siv hluav taws xob mercury, thiab txhuam yog ua los ntawm graphite.
Lub sijhawm tshaj tawm: Tsib Hlis-11-2022